沉淀相对镍基718合金高温高压水环境应力腐蚀裂纹萌生行为影响研究

李维鹏, 罗坤杰, 王惠生, 陈嘉诚, 韩姚磊, 庞晓露, 彭群家, 乔利杰

Effect of Precipitation on Stress Corrosion Cracking Initiation of Nickel Based 718 Alloy in High Temperature and High Pressure Water

LI Weipeng, LUO Kunjie, WANG Huisheng, CHEN Jiacheng, HAN Yaolei, PANG Xiaolu, PENG Qunjia, QIAO Lijie

表1 两种镍基718合金化学成分 (mass fraction / %)

Table 1 Chemical compositions of two 718 nickel-based alloys

Strip C Si Mn P S Cr Ni Mo Al Ti Nb + Ta Co Fe A 0.009 0.05 0.26 0.003 0.001 18.28 53.4 3.07 0.51 1.03 5.11 0.0018 Bal. B 0.01 0.04 0.26 0.006 0.001 18.08 53.6 3.06 0.52 1.02 5.04 0.002 Bal.